MESON Chess Problem Database

Problem Display
PID: 210244 (4N1Q1/8/2N5/Rnp2k1b/1q2r3/2P2nBP/1pR5/1B4bK w - - 0 1)

Reddmann, Hauke

Deutsche Schachblatter, 1989

4N1Q1/8/2N5/Rnp2k1b/1q2r3/2P2nBP/1pR5/1B4bK

#2

10 + 9

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se5
      • 2.Se7#
  • Tries
    • 1.Qf7+?
      • 1...Kg5
        • 2.Qf6#
      • 1...Bxf7!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Se7#
      • 1...Bxe8
        • 2.Rxf3#
      • 1...Bg6
        • 2.Qd5#
      • 1...Bf7
        • 2.Qg4#
      • 1...c4
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • S(c);S_CUTR(e)::S(H)
  • Tries
    • Try
      • Q(J);CHECK
      • Vars
        • K(h);P-FLIGHT::QAB1(J)
      • Refutation
        • B(i);XQ(J)
  • Actual
    • R(C);P_PINR(e),P_PINS(c)
    • Threat
      • S(H)
    • Vars
      • B(i);N_GUARD,XS(I)::R(C),XS(c)
      • B(i);SBLOCK::QAR2(J)
      • B(i);N_GUARD::QAB1(J)
      • P(g);N_GUARD,S_CUTQ(d),S_CUTS(f)::S(H)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).